<template>
	<view>
		<!-- 使用自定义的组件 -->
		<!-- <my-search :bgcolor="'pink'" :radius="3"></my-search> -->
		<my-search @click="goToSearch"></my-search>
		
		<view class="scroll-view-container">
			
			<!-- 左侧滑动区域 -->
			<scroll-view scroll-y="true" class="left-scroll-view" :style="{height:wh+'px'}">
				<block v-for="(item,i) in cateList" :key="i">
					<view :class="['left-scroll-view-item',i === active ? 'active' : '']" @click="activeChanged(i)">{{item.cat_name}}</view>
				</block>
			</scroll-view>
			
			<!-- 右侧侧滑动区域 -->
			<scroll-view scroll-y="true" class="right-scroll-view"  :style="{height:wh+'px'}" :scroll-top="scrollTop">
				<view class="cate-lv2" v-for="(item2,i2) in cateLevel" :key="i2">
					<view class="cate-lv2-title">
						/{{item2.cat_name}}/
					</view>
					<!-- 渲染三级分类列表数据 -->
					<view class="cate-lv3-list">
						<!-- 三级分类的item项 -->
						<view class="cate-lv3-item" v-for="(item3,i3) in item2.children" :key="i3" @click="goToGoodsList(item3)">
							<!-- 三级分类的图片 -->
							<image :src="item3.cat_icon.replace('dev','web')" mode=""></image>
							<text>{{item3.cat_name}}</text>
						</view>
					</view>
				</view>
			</scroll-view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				wh:0,//当前屏幕可用高度
				cateList:[],
				active:0,
				cateLevel:[],//二级分类
				scrollTop:0,
			};
		},
		onLoad() {
			const sysInfo=uni.getSystemInfoSync()
			console.log(sysInfo,"009");
			this.wh=sysInfo.windowHeight - 50
			this.getCateList()
		},
		methods:{
			async getCateList(){
				const {data:res} =await  uni.$http.get('/api/public/v1/categories')
				console.log(res,"00");
				if(res.meta.status !== 200) return uni.$showMsg()
				this.cateList=res.message
				this.cateLevel=res.message[0].children
			
			},
			activeChanged(i){
				this.active = i;
				this.cateLevel = this.cateList[i].children;
				this.scrollTop = this.scrollTop === 0 ? 1 : 0
			},
			//跳转至商品列表页
			goToGoodsList(item){
				uni.navigateTo({
					url:'/subpkg/goods_list/goods_list?cid='+item.cat_id
				})
			},
			//跳转至搜索页面
			goToSearch(){
				uni.navigateTo({
					url: '/subpkg/search/search',
				});
			}
		}
	}
</script>

<style lang="scss">
	.scroll-view-container{
		display: flex;
		.left-scroll-view{
			width: 150px;
			.left-scroll-view-item{
				width: 100%;
				background-color: #f7f7f7;
				text-align: center;
				font-size: 12px;
				line-height: 60px;
				position: relative;
				border-bottom: 1rpx solid #E8E8E8;
				&.active{
					border-radius: 15rpx;
					margin: 15rpx;
					background-color: #fff;
					&::before{
						content: "";
						display: block;
						background-color: #c00000;
						width: 6rpx;
						height: 40rpx;
						border-radius: 3px;
						position: absolute;
						top: 50%;
						left: 5%;
						transform: translateY(-50%);
					}
				}
			}
		}
		.right-scroll-view{
			.cate-lv2{
				.cate-lv2-title{
					font-size: 24rpx;
					font-weight: 600;
					text-align: center;
					padding: 15rpx 0;
				}
				.cate-lv3-list{
					display: flex;
					flex-wrap: wrap;
					.cate-lv3-item{
						width: 33.33%;
						display: flex;
						flex-direction: column;
						justify-content: center;
						align-items: center;
						margin-bottom: 10px;
						image{
							width: 60px;
							height: 60px;
						}
						text{
							margin: 5px 0;
							font-size: 24rpx;
						}
					}
				}
			}
		}
	}
</style>
